DYNAMIC RADAR CRUISE CONTROL SYSTEM Wiper Signal Circuit

DESCRIPTION

When the driving support ECU assembly detects that the wipers are operating at high speed, control of vehicle speed by the dynamic radar cruise control system is canceled.

WIRING DIAGRAM

A01MGKHE10
*a Windshield Wiper Switch Assembly
*b from IG1 NO. 3 Relay
*c ECU-IG1 NO. 1
*d Driving Support ECU Assembly

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE


  1. CHECK WIPER AND WASHER SYSTEM


    1. Check the wiper and washer system operates normally.

      OK
      Wiper and washer system operates normally
      Result
      Proceed to
      OK
      NG

    NG
    OK
  2. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH ASSEMBLY - AUXILIARY BATTERY AND BODY GROUND)


    1. A01MIR5C74
      *a

      Rear view of wire harness connector

      (to Driving Support ECU Assembly)

      Disconnect the driving support ECU assembly connector.

    2. Measure the voltage and resistance according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G72-30 (B) - Body ground Power switch on (IG) 11 to 14 V
      G72-30 (B) - Body ground Power switch off Below 1 V
      G72-32 (WIP2) - Body ground Power switch on (IG), windshield wiper switch Hi 11 to 14 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      G72-25 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK
    NG